java.lang.ClassNotFoundException: com.mysql.jdbc.Driver in Eclipse

Question

What is wrong with the code there are lots of error while debugging. I am writing a code for a singleton class to connect with the database mysql.

Here is my code

Answer 1

Every one has written an answer but I am still surprised that nobody actually answered it by using the best simple way.
The people answer that include the jar file. But, the error will still occur.

The reason for that is, the jar is not deployed when the project is run. So, what we need to do is, tell the IDE to deploy this jar also.

The people here has answered so many times that put that jar file in the lib folder of WEB-INF. That seems okay, but why do it manually. There is simple way. Check the below steps:

Step 1: If you haven't referenced the jar file into the project then, reference it like this.

Right click on the project and go to the project properties. Then, go to the java build path, then add external jar file via that.

But this will still not solve the problem because adding the external jar via build path only helps in compiling the classes, and the jar will not be deployed when you run the project. For that follow this step

Right click on the project and go to the project properties. Then, go to the Deployment Assembly then press Add , then go to the java build path entries and add your libraries whether it is jstl, mysql or any other jar file. add them to deployment. Below are the two pictures which display it.